Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS San Juan, PR

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3
000
FNCA52 TJSJ 200936
FWFSJU

Fire Weather Planning Forecast for PUERTO RICO
National Weather Service SAN JUAN PR
536 AM AST Tue Feb 20 2018

.DISCUSSION...Fresh to strong breezes continue across the area.
While most areas will not see 18 mph sustained, gust could easily
exceed 30 to 35 mph from time to time. Fortunately the area of
strongest winds (northeast and north coasts) will not coincide
with the areas of least moisture (south coast). Moisture will
approach critical values but relative humidities are not expected
to reach red flag warning criteria. Relative humidities may
briefly fall below 40 percent today, but should not be as low as
yesterday. KBDI values are slowly rising, while the 10 hour
moisture is sagging indicating that fire danger levels are still
rising.


PRZ014-210945-
Southeast Coastal Plains-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           MClear       MClear       PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     20           10           20
TEMP (24H TREND)      87 (+2)      69 (0)       87
RH % (24H TREND)      45 (-4)      85 (-1)      45
20FTWND-VAL/AM(MPH)   NE 10 G22                 NE 11 G23
20FTWND-RDG/PM(MPH)   NE 13 G22    NE  8 G18    E 17 G26
MIXING HGT(FT-AGL/MSL)8325                      8381
TRANSPORT WND (MPH)   NE 24                     E 29
VENT RATE (KT-FT)     179494                    201847
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ015-210945-
Southern Hills-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           MClear       MClear       PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     20           10           30
TEMP (24H TREND)      84 (+3)      66 (0)       82
RH % (24H TREND)      48 (-6)      88 (-2)      51
20FTWND-VAL/AM(MPH)   NE 10 G19                 NE 11 G20
20FTWND-RDG/PM(MPH)   NE 11 G18    NE  9        NE 14 G25
MIXING HGT(FT-AGL/MSL)8556                      8295
TRANSPORT WND (MPH)   NE 24                     E 28
VENT RATE (KT-FT)     172638                    186760
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ016-210945-
North Coastal Plains-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        PCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     40           50           50
TEMP (24H TREND)      82 (-1)      69 (-1)      82
RH % (24H TREND)      55 (-4)      88 (-2)      56
20FTWND-VAL/AM(MPH)   E 14 G25                  E 15 G28
20FTWND-RDG/PM(MPH)   NE 14 G25    E 11 G22     E 18 G28
MIXING HGT(FT-AGL/MSL)7439                      7401
TRANSPORT WND (MPH)   E 25                      E 31
VENT RATE (KT-FT)     178047                    197856
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ017-210945-
Northern Hills-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           MClear       PCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     30           40           50
TEMP (24H TREND)      81 (0)       67 (0)       81
RH % (24H TREND)      54 (-5)      89 (-4)      56
20FTWND-VAL/AM(MPH)   E  8 G18                  E  8 G18
20FTWND-RDG/PM(MPH)   NE 10 G18    E  6         E 14 G26
MIXING HGT(FT-AGL/MSL)7642                      7585
TRANSPORT WND (MPH)   E 25                      E 29
VENT RATE (KT-FT)     174571                    191657
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ018-210945-
West Coast-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           MClear       MClear       MClear
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     30           10           10
TEMP (24H TREND)      87 (+2)      67 (-1)      86
RH % (24H TREND)      44 (-8)      90 (-1)      48
20FTWND-VAL/AM(MPH)   E  7 G22                  E  8 G24
20FTWND-RDG/PM(MPH)   NE 13 G23    NE  7 G18    E 16 G26
MIXING HGT(FT-AGL/MSL)8844                      8482
TRANSPORT WND (MPH)   E 23                      E 25
VENT RATE (KT-FT)     177389                    193795
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ019-210945-
Eastern Interior-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        PCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     40           50           50
TEMP (24H TREND)      83 (+2)      67 (0)       82
RH % (24H TREND)      57 (-1)      91 (-2)      58
20FTWND-VAL/AM(MPH)   NE  8 G19                 E  9 G21
20FTWND-RDG/PM(MPH)   NE 10 G19    NE  7        E 14 G25
MIXING HGT(FT-AGL/MSL)7768                      7361
TRANSPORT WND (MPH)   NE 24                     E 29
VENT RATE (KT-FT)     171542                    190674
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ022-210945-
Luquillo Mountain Range-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        MCldy        MCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     60           60           60
TEMP (24H TREND)      79 (+1)      65 (-1)      78
RH % (24H TREND)      60 (-1)      89 (-4)      64
20FTWND-VAL/AM(MPH)   NE  9                     E 10
20FTWND-RDG/PM(MPH)   NE 10        NE  8        E 14 G24
MIXING HGT(FT-AGL/MSL)7284                      6891
TRANSPORT WND (MPH)   E 24                      E 30
VENT RATE (KT-FT)     154202                    179637
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ023-210945-
Central Mountain Range-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           MClear       MClear       PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     20           10           30
TEMP (24H TREND)      81 (+3)      65 (0)       78
RH % (24H TREND)      53 (-6)      88 (-4)      57
20FTWND-VAL/AM(MPH)   NE 10 G18                 E 10 G19
20FTWND-RDG/PM(MPH)   NE 10 G18    NE  9        E 14 G24
MIXING HGT(FT-AGL/MSL)7898                      7875
TRANSPORT WND (MPH)   E 24                      E 26
VENT RATE (KT-FT)     176819                    192368
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ024-210945-
Cayey Mountain Range-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        PCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     30           40           50
TEMP (24H TREND)      79 (0)       66 (+1)      78
RH % (24H TREND)      57 (-2)      89 (-4)      61
20FTWND-VAL/AM(MPH)   NE  8 G17                 NE  9
20FTWND-RDG/PM(MPH)   NE 11        NE  7        E 14 G25
MIXING HGT(FT-AGL/MSL)7385                      6922
TRANSPORT WND (MPH)   NE 25                     E 30
VENT RATE (KT-FT)     164374                    177749
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ025-210945-
Vieques-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        PCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     40           60           60
TEMP (24H TREND)      84 (+1)      70 (0)       83
RH % (24H TREND)      56 (-2)      89 (-1)      59
20FTWND-VAL/AM(MPH)   NE 18 G27                 NE 19 G31
20FTWND-RDG/PM(MPH)   NE 17 G26    NE 17 G26    E 19 G31
MIXING HGT(FT-AGL/MSL)7463                      7076
TRANSPORT WND (MPH)   NE 28                     E 33
VENT RATE (KT-FT)     175826                    201858
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ026-210945-
Culebra-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        MCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     40           60           60
TEMP (24H TREND)      85 (+2)      71 (0)       83
RH % (24H TREND)      55 (-5)      87 (-1)      59
20FTWND-VAL/AM(MPH)   NE 17 G25                 E 19 G29
20FTWND-RDG/PM(MPH)   NE 15 G24    NE 16 G25    E 19 G29
MIXING HGT(FT-AGL/MSL)7205                      6964
TRANSPORT WND (MPH)   E 28                      E 33
VENT RATE (KT-FT)     169918                    203295
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

PRZ027-210945-
Southwest Coastal Plains and Mona Island-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           MClear       MClear       MClear
PRECIP TYPE           showers      NONE         showers
CHANCE PRECIP (%)     20           0            10
TEMP (24H TREND)      89 (+3)      68 (0)       86
RH % (24H TREND)      39 (-11)     89 (+1)      45
20FTWND-VAL/AM(MPH)   E  9 G21                  E 12 G24
20FTWND-RDG/PM(MPH)   NE 13 G22    NE  8 G20    E 17 G25
MIXING HGT(FT-AGL/MSL)8964                      8635
TRANSPORT WND (MPH)   E 22                      E 24
VENT RATE (KT-FT)     172608                    184526
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

VIZ001-210945-
Saint Thomas and Saint John-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        MCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     40           60           60
TEMP (24H TREND)      86 (+3)      70 (0)       84
RH % (24H TREND)      51 (-5)      87 (0)       54
20FTWND-VAL/AM(MPH)   NE 17 G28                 E 19 G31
20FTWND-RDG/PM(MPH)   NE 16 G27    NE 16 G26    E 19 G31
MIXING HGT(FT-AGL/MSL)7220                      7121
TRANSPORT WND (MPH)   E 28                      E 35
VENT RATE (KT-FT)     175286                    211400
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$

VIZ002-210945-
St Croix-
536 AM AST Tue Feb 20 2018

                      Today        Tonight      Wed

CLOUD COVER           PCldy        PCldy        PCldy
PRECIP TYPE           showers      showers      showers
CHANCE PRECIP (%)     40           50           50
TEMP (24H TREND)      85 (-1)      71 (+1)      84
RH % (24H TREND)      53 (0)       85 (-2)      55
20FTWND-VAL/AM(MPH)   NE 16 G26                 NE 16 G28
20FTWND-RDG/PM(MPH)   NE 16 G26    NE 14 G25    E 18 G28
MIXING HGT(FT-AGL/MSL)7503                      7349
TRANSPORT WND (MPH)   E 29                      E 32
VENT RATE (KT-FT)     188273                    208518
DISPERSION            5                         5
DSI                   6            6            6
LAL                   1            1            1
HAINES INDEX          2            2            2

Remarks...None.


$$


.FORECAST FOR DAYS 3 THROUGH 7...

.THURSDAY...MOSTLY CLEAR. ISOLATED SHOWERS. LOWS IN THE UPPER
60S. HIGHS AROUND 80. NORTHEAST WINDS AROUND 15 MPH.
.FRIDAY...PARTLY CLOUDY. SCATTERED SHOWERS. LOWS IN THE UPPER
60S. HIGHS AROUND 80. NORTHEAST WINDS AROUND 15 MPH.
.SATURDAY...PARTLY CLOUDY. SCATTERED SHOWERS. LOWS IN THE UPPER
60S. HIGHS AROUND 80. NORTHEAST WINDS AROUND 10 MPH.
.SUNDAY...PARTLY CLOUDY. SCATTERED SHOWERS. LOWS IN THE UPPER
60S. HIGHS IN THE LOWER 80S. NORTHEAST WINDS AROUND 10 MPH.
.MONDAY...MOSTLY CLEAR. LOWS IN THE UPPER 60S. HIGHS IN THE LOWER
80S. EAST WINDS AROUND 5 MPH.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.